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This Talos Threat Source newsletter summarizes recent cybersecurity developments: a widespread Sha1-Hulud npm supply-chain campaign affecting thousands of repositories, FBI-reported impersonation fraud resulting in large-scale financial theft, Everest ransomware's claimed 596 GB data exfiltration from Iberia, CISA alerts on commercial spyware targeting messaging app users, LINE messaging vulnerabilities that enable espionage, ClamAV signature retirement plans, and a list of prevalent malware file hashes observed by Talos.